cve-2020-27736
Vulnerability from cvelistv5
Published
2021-04-22 20:42
Modified
2024-08-04 16:18
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H/E:P/RL:O/RC:C
Summary
A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions < V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.20), APOGEE PXC Modular (BACnet) (All versions < V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.20), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). The DNS domain name label parsing functionality does not properly validate the null-terminated name in DNS-responses. The parsing of malformed responses could result in a read past the end of an allocated structure. An attacker with a privileged position in the network could leverage this vulnerability to cause a denial-of-service condition or leak the read memory.
References
productcert@siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf
productcert@siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-669158.pdfPatch, Vendor Advisory
productcert@siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-705111.pdfPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-669158.pdfPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-705111.pdfPatch, Vendor Advisory
Impacted products
Vendor Product Version
Siemens APOGEE PXC Compact (P2 Ethernet) Version: All versions < V2.8.20
Siemens APOGEE PXC Modular (BACnet) Version: All versions < V3.5.5
Siemens APOGEE PXC Modular (P2 Ethernet) Version: All versions < V2.8.20
Siemens Nucleus NET Version: All versions
Siemens Nucleus ReadyStart V3 Version: All versions < V2017.02.3
Siemens Nucleus ReadyStart V4 Version: All versions < V4.1.0
Siemens Nucleus Source Code Version: Versions including affected DNS modules
Siemens SIMOTICS CONNECT 400 Version: All versions < V0.5.0.0
Siemens TALON TC Compact (BACnet) Version: All versions < V3.5.5
Siemens TALON TC Modular (BACnet) Version: All versions < V3.5.5
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  }
}


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